RE: Scents
My experience with scents is simply this. Scent suits and cover scent are only as good as your commitment to staying scent free. Establish a good scent free regimen and stick to it. Follow it religously.
There is no guarentee against being winded, but you can improve your odds dramatically. Useing scent free soap on your cloths, in the shower before you hunt, scent free deoderant, etc. All these play a vital role in your ability to remain as scent free as possible.